Demountable-rim tool



Dec. 11, `1928.

W. N. BOOTH DEMOUNTABLE RIM TOOL Filed Au 'auf .talented lll,

WILLIAM N. BOOTH, OF DETROT, MICHIGAN.

Application filed August 21, 1922. Serial No. 583,338.

The invention relates to tools 'for contraetino' and e2( )andino` rimsDartieularl of.

the demountable type and has for its object the provision ot a tool ofbut leiv parts which may be readily attached to a transversely split rimto separate the ends of the rim and to Contract the rim suliioiently toK apply or remove a tire. With this and other objects in view9 theinvention resides in the novel features of Construction as more fullyhereinafter set forth.

ln the drawings: Figure l is a plan view ot a portion of a demountablerim hai/ine cooperating hinge members at its split, with the toolapplied, this tool being shown partly in section; Figure 2 is a sioeelevation thereof; Figure 3 is a side elevation thereof showing` theparts in ditlerent adjusted positions;

Figures d, 5 and 6 are side elevations of a portion oia demountable rimhaving' overlappingl plates at its split, with the tool applied andshowing the parts in different adjusted positions.

As shown in Figures l, 2 and 3,. the demountable rim is transverselysplit Vat 1 to torni the tivo abutting end portions 2 and 3 to Whiehsecured Cooperating hinge members e and 5 respectively7 har/ingregistering barrel portions adapted to receive a pin.

The rim tool has the yokes l and 8 Which respectively embraee the .rimend portions 2 and 3 and are secured thereto by means oit the fixed pins9 in one of the bifurcations and the slidable headed pins 10 in theother of the bifurcations, these pins being` engageable in transverselyaligned apertures in the side 'flanges ofi the end portions ol the rim.1l is a rod having right and left threaded end portions and anintermediate enlarge.- ment 12 throue'h which sli dably extends thetransverse rou The threaded end portions ot the rod 11 threadedly engagethe oylindrifal nuts 14 journalled in the bifurcations 15 extending'outwardly from the bases el the yokes 7 and 8. lntegral top bars 16 arepreferably provided extending Vbetween the ends of the bifurcations 15to reinforce the same and the rod l1 also preferably has theenlargements 1'? at its ends to prevent accidental disengagement ot therod from the nuts.

rlhe yoke 8 has X the diverging` lugs 18 and 19 inclined outwardly andinwardly and eX tending toward the endportion 3 of the rim and adaptedto alternatively engage its base to limit the rotation ol the yoke aboutits pins 9 and 10 relative to the end portion 3.'

The yoke Z has the outwardly inclined lug,` 2O extending` toward the endportion 2 ot the rim and engageable with the base of this end portion tolimit the rotation of the yoke abut its pins 9 and 10 respectively tothe rim end portion. The yoke 7 also has the inwardly extendingsubstantially parallel lugs 21 upon its main bifurcations and engageablewith theside flanges 22 of the rim end portion 3 whereby the sideflanges of both rim end portions 2 and 3 are maintained in alignment andare prevented from moving laterally relative to each other during' theirrelative radial movements While being separated. The ends of the lugs 2lare constructed to engage the inner peripheries of the beads 23 at theouter edges of the side {ianges 22 upon rotation of the yoke 7 relativeto its rim end portion 2 and to- Ward the yoke 8, these lugs aeting asfulorums for moving the rim end portion 2 radially inward relative tothe rim end por tion 3 shown particularly in Figure 3.

ln operation, the tool is applied to the demountable rim With the yoke 7adjacent the split in the rim, these yokes being` secured to the rim bythe pins 9 and 10. The rod 11 having right and lett threaded portions isrotated to move the yokes towarf. each other when the lug' 19 upon theyoke 8 engages the base of the rim end portion and prevents furtherrotation of this yoke relative to' the rim end portioin and the ends ofthe lugs 21 engage the inner peripheries of the beads 23 ot the rim endportion 3. Continued rotation of the threaded rod 11 moves the rim endportion 2 radially invvard relative to the rim end portion 3, the yoke 7tuleruming about the portions of the heads engaged by the ends of thelugs 21. lllhen the rim end portion 2 has moved radially inwardsuliieient so its l clears the barrel portion 6 oi' the hinge member 5,the rim end portion 2 then slides over the rim end portion 3 until therim has been con.- traoted sufficiently to permit of applyinglorremoving a tire. To return the rimendportions of the rim to theiroriginal positions, the threaded rod 11 is rotated in the oppositedirection, at which time the lug 18 of the yoke 8 eomes into engagementwith the base of the rim end portion 3 and the fr s lug 2O oi the yoke Tcomes into eiigagcment with the base of the rim end portion 2, therebypreventing any further rotative movement of the yokes 8 and 7respectively relative to their rim end portions. Continued rotation etthe threaded rod ll in this direction will then more the rim end portion2 over the rim end portion 3 until it snaps into place. The rim tool canthen be removed from the rim by dii'awing the pins l0 ontvf'ardly todisengage them from the side flanges of the rim end portions.

As shown in Figures al, 5 and 6y the rim is of that type havingcooperating' plates 2st and 25 adjacent its split7 each having an innerend portion which slightly overlaps the base ot the rim end portion towhich the other plate is secured. The rim tool is of the sameconstruction as that shown in Figures l, 2 and 3.

ln operation, this rim tool is applied to the demountable rim svith theyoke 7 adjacent the transverse split of the demountable rim and thethreaded rod ll is rotated to move the yokes away from each other whenthe lugr i8 upon the yoke 8 and the lug` 2O upon the yoke 7 engage thebases et the rim end portions and prevent further rotation ot' theseyokes relative to their respective rim end portions. Continued rotationet the threaded rod then separates the ends ot the rim sufiiciently toclear the overlapping plates 2li and 25, at which time a suitable toolsuch as a screiv driver may be inserted between the rim ends to hold thesame in this separated relation. Then the threaded rod ot the tool isrotated in the reverse direction to move the yokes toward each other.The yoke 8 is rotated relative to the rim end portion to which it issecured until its lug 19 engages the base oi this rim ond portion. Theyoke 7 is rotated relative to the rim end portion to which it is secureduntil the ends oit its lugs 2l engae the inner peripheries of the beadsupon the rim end portion to which the yoke S is secured` Continuedrotation ot the threaded rod swings the rim end portion to which theyoke is secured radially inward relative to the rim end portion to whichthe yoke 8 is secured and then moves these rim end portions over eachother until the rim has been contracted sutliciently to apply or removea tire. The screiv driver may be removed after the rim end portions havebegun their telescopic movement. The rim may be returned to its normalposition by next rotating' the threaded rod `of the tool in a reversedirection.

What I claim as my invent-ion is:

l. ln a rim tool for a transversely split rim having a side flange, thecombination With a member secured to one end otl the rim, ot a memberconi'iected to the other end of the rim and having a lug arranged to eX-tend at the side ot and tulcrum upon the side flange at the firstmentioned end of the rim7 and means tor moving` said members toivardeach other.

2. In a rim tool for transversely split rim having a beaded side flange,the combination with. a. member secured to one end et the rim and havinga lug arranged to engage the side tiange and ulcrum upon its bead at theeiner end of the rim, a second member secured e the last-mentioned endot the rim, and means for moving` said members toward each other.

3, ln a rim tool ior a transversely split rim, the combination with amember secured to one end of the rim, ot member connected to the otherend of the rim, a common means upon said lastanentioned memberengageable n end tor movingv With the Vfirst-mentioned rii' the rim endsradially relative to each other and tor maintaining' the, rim ends inalignment, and means tor moving` said members relative to each other.

4. ln a rim tool ,tor a transversely split rim having' a beaded sideflange, the combination with a member secured to one end of the rim, ota second member connected to the other end oi the rim7 means upon saidsecond member engageable with the bead upon the side flange ot thefirst-mentioned rim end for moving the second-mentioned rim end radiallyrelative to the tirst-mentioned rim end, and means for moving saidmembers toward each other.

5. lin a rim tool tor a transversely split rim having side flanges withbeads at their outer edges, the combination ivith a yoke detffichablysecured to one of the rim ends, ot a second yoke dctachably secured tothe other or" the rim ends, lugs upon said second yoke at t-he sidesotthe side tianges and engageable with the beads upon said firstmentionedrim end to 'fulcrum thereabout, means upon the rim for positioning` saidsecond yoke so that its lugs will engage the beads upon saidinst-mentioned rim end`r and a'threaded rod opera-tively connected tosaid yolfcs to move the same toward each other.

G. ln a rim tool Vfor a transversely split rim having a side flangeprovided ivith a transverse bearing surface at one end of the rim., thecombination with a member secured to the other end ot' the rim andhaving' a lug` arranged to fulcrum upon said bearing surface, wherebysaid rim ends are moved radi` ally relative to each other upon swingingot said member.

ln testimony whereof aiiizr my signature.

ivrttian n. soort-r.

